Improvement in metal punching-machines



UNITED VStra/fries PATENT @Errea DANIEL W. BAER, OF RICHLAND CENTRE, WISCONSIN, ASSIGNOR TO WILLIAM T. MILLER, OF SAME PLAGE.

IMPROVEMENT IN METAL PUNCHlNG-MACHINES.

Specification forming part of Letters Patent No. 165,466, dated July 13, 1875; application filed April 10, 1875.

To all whom it may concern Beit known that I, DANIEL W. BAER, of Richland Centre, in the county of Richland and State of Wisconsin, have invented a new and Improved Punching-Machine, ot' which the following isa specification:

The object ot' this invention is to provide a simple and efficient arrangement for putting in and taking out interchangeable dies and punches of ditt'erent-sizes.l

It consists of a channel between housings, in which the cam-lever for forcing down the punch is pivoted, which the die-block containing the die slides in and out of, and the combination therewith of a locking-pin lever and spring, so that the spring forces the pin in a hole in the die to fasten it in its proper place. It also consists ot' a slotted head-block, connected with the cam-lever, and contrived so that the punches which have a head on one end can slide in and out freely, being held by the head, while the lower end is guided to the die by a guide-plate of the die-block above the die, all as hereinafter described.

Figure l is a longitudinal sectional elevation of a punch constructed according to Iny invention. Fig. 2 is a transverse section taken on the linex m ot' Fig 1, and Fig. 3 is a horizontal section of the die-block on the line y y of Fig. 1.

Similar letters of reference indicate corresponding parts. e

A represents the channel between the housings B, near the top of which the cam-lever G E is is pivoted to force down the punches. the "die-block containing` the die F, and having guide-plates G for the punch over the die. This block slides in between the housings freely, and is locked by the pin I, connected to lever J, which is actuated by spring K. L is the .head-block for connecting the punches M to the cani-lever, itself being connected by its lugs N, which engage the lever byits grooves O, so that the head P bears on the top Q of the block. The punch is connected by sliding the head in the channel R, above the slotted plate S, through which the shank hangs, the lower end being in the guide-plates of the dieblock E.

Having thus described my invention, I claim as new and desire to secure by Letters Patent- 1. The die-block E, itted in the channel A, between thehousings B, and having a stoppin I, lever J, and spring K, combined with it, substantially as specified.

2. The combination, in a punching-machine, of the' headblock L having an open-ended channel, R, and the housings B provided with a channel, A, with the removable die-block E, headed punch M, and cam-lever C, as and for the purpose setforth.

DANIEL W. BAER.

Witnesses:

FRED. H. TUTTLE, JAMES H. MINER. 

